如何在php中将包含多个数据的纯文本解析为数组

请我需要帮助我在谷歌上尝试了很多搜索，但没有找到任何有用的结果，所以我决定在这里询问

我有一本书。包含此信息的txt文件，也可以是$variable包含此信息

---------Personal info ------------
First Name: Fidelis
Last Name: Peter
-----------Account Info ---------
ID: HTY15gd
Username: fidelisepeter
---------More ---------
About: A graphic designer

---------Personal info ------------
First Name: Fidelis
Last Name: Peter
-----------Account Info ---------
ID: HTY15gd
Username: fidelisepeter
---------More ---------
About: A graphic designer

---------Personal info ------------
First Name: Elis
Last Name: Peter
-----------Account Info ---------
ID: HTY15gd
Username: fidenew

我希望在数组中得到这样的结果

Array
(
    [0] => Array
        (
            [first_name] => Fidelis
            [last_name] => Peter
            [Id] => HTY15gd
            [username] => fidelisepeter
            [about] => graphic designer
        )

    [1] => Array
        (
            [first_name] => Peter
            [last_name] => Fidelis
            [Id] => HTY15gd
            [username] => fidelisepeter
            [about] => web developer
        )

    [2] => Array
        (
            [first_name] => Fidelis
            [last_name] => Peter
            [Id] => HTY15gd
            [username] => fidelisepeter
        )

)

我不知道该怎么办请任何人帮忙